Page 85 - Bangladesh_classwiz_BOOK2018_rev_Neat

j¶Yxq ‡h, cÖ‡Z¨KwU c×wZ‡ZB GKB djvdj cvIqv hvq|

¯^vfvweK I mvaviY jMvwi`‡gi ‡jLwPÎ ‡`L‡Z GKB iKg wKš‘ G‡`i fyR I †KvwU wfbœ, hv wb‡P ‡`Lv‡bv n‡jv |

( ) = ln( )

( ) = log( )

G‡¶‡Î `y‡Uv †jLwPÎB (1,0) we›`yMvgx , < 1 Gi Rb¨ Df‡qi gvb FYvZœK Ges < 0 Gi Rb¨ AmÁvwqZ

| Dfq ‡jLwP‡Î abvZœK Xvj i‡q‡Q, hv Gi gv‡bi e…w×i mv‡_ mv‡_ Kg‡Z _v‡K |

D`vniYgvjv

4
5 ×8×16
1 | Gi gvb ‡ei Ki‡Z n‡e |
5
2 ×125
mgvavb- GB mgm¨v mgvav‡bi Rb¨ K¨vjKy‡jU‡i ^ evUb e¨envi K‡i ivwkwU‡K cÖ‡ek Kiv‡Z n‡e | Gici =
evUb Pvc‡j mivmwi gvb cvIqv hv‡e-

(Key log- a5^4$O8O16R2^5$O125=)

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